Campbell, Inc. sold 112,000 units last year for $8.00 each. Variable costs per unit were $2.40 for direct materials, $2.00 for direct labor and $.40 for variable overhead. Fixed costs were $24,000 in manufacturing overhead and $25,000 in nonmanufacturing costs a. What is the total contribution margin? Total Contribution Margin b. What is the unit contribution margin? (Round your answer to 2 decimal places.) Unit Contribution Margin c. What is the contribution margin ratio? (Round your intermediate calculations to 2 decimal places.) Contribution Margin Ratio %